<template>
  <div>
    <!-- Header 区域 -->
    <van-nav-bar
      fixed
      title="文章详情"
      left-arrow
      @click-left="$router.back()"
    />
    <div v-if="detailList.length === 0">
      <!-- 文章等待加载中 -->
      <van-loading color="#1989fa" size="24px" vertical>加载中...</van-loading>
    </div>
    <!-- 文章信息区域 -->
    <div class="article-container" v-else>
      <!-- 文章标题 -->
      <h1 class="art-title">{{ detailList.title }}</h1>

      <!-- 用户信息 -->
      <van-cell
        center
        :title="detailList.aut_name"
        :label="formateDate(detailList.pubdate)"
      >
        <template #icon>
          <img :src="detailList.aut_photo" alt="" class="avatar" />
        </template>
        <template #default>
          <div>
            <van-button
              type="info"
              size="mini"
              v-if="detailList.is_followed === true"
              @click="followedFn(true)"
              >已关注</van-button
            >
            <van-button
              icon="plus"
              type="info"
              size="mini"
              plain
              v-else
              @click="followedFn(false)"
              >关注</van-button
            >
          </div>
        </template>
      </van-cell>

      <!-- 分割线 -->
      <van-divider></van-divider>

      <!-- 文章内容 -->
      <div class="art-content" v-html="detailList.content"></div>

      <!-- 分割线 -->
      <van-divider>End</van-divider>

      <!-- (文章)点赞 -->
      <!-- attitude：-1：无态度，0：不喜欢，1：点赞 -->
      <div class="like-box">
        <van-button
          icon="good-job"
          type="danger"
          size="small"
          v-if="detailList.attitude === 1"
          @click="loveFn(true)"
          >已点赞</van-button
        >
        <van-button
          icon="good-job-o"
          type="danger"
          plain
          size="small"
          v-else
          @click="loveFn(false)"
          >点赞</van-button
        >
      </div>
    </div>
    <!-- 评论列表 -->
    <div>
      <comment-list></comment-list>
    </div>
  </div>
</template>

<script>
import {
  detailAPI,
  userFollowedAPI,
  userUnFollowedAPI,
  likeArticleAPI,
  UnlikeArticleAPI,
} from "@/api";
import { timeAgo } from "@/utils/date.js";
import CommentList from "./CommentList.vue";
export default {
  components: { CommentList },
  name: "ArticleDetail",
  data() {
    return {
      detailList: [], //存储文章详情数据
    };
  },
  async created() {
    const { data: res } = await detailAPI({
      artId: this.$route.query.art_id,
    });
    // console.log(res);
    this.detailList = res.data;
    // console.log(this.detailList);
  },
  methods: {
    // 处理时间的函数，不能直接使用，所以要赋值
    formateDate: timeAgo,
    //关注/取关作者
    async followedFn(bool) {
      if (bool === true) {
        // 用户点击在“已关注”按钮上
        // 页面=》显示关注按钮
        this.detailList.is_followed = false;
        // 业务->取关
        // 调接口-》取关接口
        const res = await userUnFollowedAPI({
          userId: this.detailList.aut_id,
        });
        console.log(res);
      } else {
        // 用户点击在“关注”按钮上
        // 页面=》显示已关注按钮
        this.detailList.is_followed = true;
        // 业务->关注
        // 调接口-》关注接口
        const res = await userFollowedAPI({
          userId: this.detailList.aut_id,
        });
        console.log(res);
      }
    },
    // 点赞/取消点赞事件
    async loveFn(bool) {
      if (bool === true) {
        // 用户点在了‘已点赞’身上
        // 显示点赞按钮
        this.detailList.attitude = 0; //0不喜欢，-1无态度

        // 业务接口-》取消点赞
        const res = await UnlikeArticleAPI({
          articleId: this.detailList.art_id,
        });
        console.log(res);
      } else {
        // 用户点在了‘点赞’身上
        // 显示已点赞按钮
        this.detailList.attitude = 1;
        // 业务接口-》点赞
        const res = await likeArticleAPI({
          articleId: this.detailList.art_id,
        });
        console.log(res);
      }
    },
  },
};
</script>

<style scoped lang="less">
.van-nav-bar {
  background-color: #575b60;
}
/deep/ .van-nav-bar__title,
/deep/.van-nav-bar__arrow {
  color: #fff;
}
.article-container {
  padding: 10px;
  margin-top: 46px;
}
.art-title {
  font-size: 16px;
  font-weight: bold;
  margin: 10px 0;
}

.art-content {
  font-size: 12px;
  line-height: 24px;
  width: 100%;
  overflow-x: scroll;
  word-break: break-all;
  /deep/ img {
    width: 100%;
  }
  /deep/ pre {
    white-space: pre-wrap;
    word-wrap: break-word;
  }
}

.van-cell {
  padding: 5px 0;
  &::after {
    display: none;
  }
}

.avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: #f8f8f8;
  margin-right: 5px;
  border: none;
}

.like-box {
  display: flex;
  justify-content: center;
}

.van-loading {
  padding-top: 46px;
}
</style>